Ontario to Loreto Flights from US$176 incl. tax

Based on HopeGoo data, Frontier Airlines offers one-way fares as low as US$217 on Cheapest nonstop routes (e.g. ONT to LTO on Fri, Mar 6), while American Airlines offers Cheapest nonstop round-trips from US$397 departing on Mon, Mar 30 and returning on Sun, Apr 5.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Ontario to Loreto is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Ontario to Loreto, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Mar 6, with one-way flights priced at just US$217. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Loreto travel is around February. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Ontario to Loreto is January, when demand for travel is lower.

After crunching the numbers on our February flight calendar, it's currently cheapest to fly from Ontario to Loreto on February 28, 2026 with American Airlines, with prices starting at US$621.

The time difference between Loreto and Ontario is 1h.

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